Protector for pneumatic tires.



D. B. STEVENSON. PROTECTOR FOR PNEUMATIC TIREs. APPLICATION FILED 00T.19, 1910.

994,21. Patented June 6, 19112 W1 TNESSES At/omgm DAVID B. surnvansolv, or

raorncroia no eea eio;

nanntn; ennnsytvema.

n rnnnivtarrc Trans.

'iSpecification of Letters Patent. 3 Patented Junie (i, 1911.

Application filed October 19, 1910. Etrial No. 5873M.

To all whom it may concern:

Be it known that 1, DAVID B, Srnvni'vsoiv,

a citizen of the United States, lti fldlng at Rankin, in the county of Alleg any and State of Pennsylvania, have invented certain new and useful Improveme s in Protectors for Pneumatic Tires; tilldrI ;y, here by declare the following to bellatfull', clear; and exact description of the inveiiition', such as will enable others skilled in the art to which it appertains to make and use the same. i v

My invention relates to new and useful improvements in protectors for pn eumatic tires and my object is to provide a sect-ional metallic shield for either theinner or outer tube ofthe tire.

A further objectis to so arrange the sec tions of the protector as to conform to the contour of the tire, r

l A further objectis to provide means for yieldingly securing the sections around the tire, and, a further objectis to provide suit able air. spaces through the sectionsgtt pre-. vent the same from becoming unduly heated.

Other objects and advantages will be hereinafter set forth and pointed out in the specification. i i

. In the accompanying drawingsfwhich are made a part of this a plication, Figure 1 isa\ side elevation of en stantially one-half of .avehicle wheel,, showing my improved proteeter applied to use thereoh. Fig.2 is an I are elevation thereof. Fig.3 is a detail se 'i-o'nal view through the tire and p,

' 'tecltor, and, Fig. '4; is an elevation of (i 118,,

" end of the band employed for holding the secticns in position around the tire.

Relei'i'ing to the drawings in which similar reference numerals designate corresponding; parts} th'ro ghout the several vie'ti 's, 1';

lindicateslhe wheel, which may be consttuc't- I ed in 'theusnal or any preferred ,inzinner; and 2 inol i'nates the usual form of pneumatic tire, which mounted in the 'Iis'ual/manner upon the fit ly il nit the i I Q In ordcrriilo protect'flthc tread -'s'ur fac ofthe outer onitmer ti ibe of the pneumatic tire,

, I provide m i rnproved form of metallic ppro-cc 50 tector, whiciferinsists of a plurality oi" sections a, \vhilch' are placed edge to edge and entirely surround the tread face of the tube of the neumatic tire. The sections :41 are coinpese of an inner .aritloutei"'wallfiijand m l l sections substantially crescent shaped in tra sverse section, the walls being joined by 'means of braces 7., dividing the space between the inner and outer Walls'into' com- '60 jpar tments, and when the sectiorfs are-"placed around the tire, 'saidcompa'rtments provi'de air chambers through 'which air may circulate to prezent overheating of thesections. The inner-w all 5/s so curved as to fit the contour o I the tire or'the tubes thereof} and the ends (if the sections project over the surface of the tire a suflicierltfiistance to pre- -vehtthe sections from leavijng the tire when the aintuhe-is inflated. H The sections t are'held in position around the parts of the tire by meansof a flexible band or ribbon 8, the free ends (it which are provided with openings 9 which engage studs 10 carried by the inner wall 5 of any one of the sections, the band 8 passing through the central compartment 11 of the sections. If desired, one orbotlnends of the band 8 may be'provided with a number of openings 9 so that the band may be lengthened or shortened to suit tires for larger orsrnall'i' Wheel In order" to prevent/slipping of the proj/tector the urface liver which the wheels are traveling, the exterior surface, of the outer walls 6 may be provided-with liigs 1 12, or anysuitable form of anti-slipping means maybe provided thereon/ f" v In applyingvth e sections around the tu es of the tire, said tubes aredeflated or; he air removed therefrom, when a sulfi'tient number of the sections 4 are introduced onto the band Byto form/a complete circle around the tube, when the tube is of normal size. The en s of the band are then i litroduced over the studs 10, when the inner tube of the ire is again inflated, which" will cause whichever tube is engaged by the protector to enter the seat formed by eiirving the in ner wall hand it will be readily seen that when the tube is To erly] forced into the seat, the protecto Wil be'prevented from leaving the tubo'o lorlg asthe inner tube is inflated. It will likewisezhe seen that owing to the flexibility .eif the band and forming the protector in sections, said sections will yield and confer-in tn the contour of the tire as it is pzfssing overthe earths surface. It will likewis'elbe 'seenthat should one of the sections become Lhroken it can be readily replaced and at a minimum amount of 55 6, respectively- "said walls b he joined together at reir'ends. there forming'the trouble, as it is only necessary'to deflate the tire and disengage the ends of the band when the sections on each side of the par ticular section having the stud may be moved farther onto the band or a suiiicient distance to provide-a1 space fora new section. It will likewise be seen that the sections can be very cheaply manufactured and that the Wear thereof Will be indefinite, as said sections are formed of metal, and, it will likevWise be seen that by properly constructing the Wearing surfaces of the sections they can be rendered practically non-slipping, thereby dispensing with the usual form of chains employed to prevent skidding of the Wheels.

lVhat I claim is A protector for pneumatic tires comprising a circular series of hollow metal sections crescent shaped 1n cross section and connected together by integral longitudinal brace plates forming three longitudinal chambers, one of the sections being provided with, integral studs projecting radially from one'of its Walls into the central chamber, in combination with a flexible metal band located in the continuous central chamber formed by placing 'the'sections side by side on the tire and provided With perforations adjacent to'its ends to engage upon said studs.

In testimony whereof I have signed my name to this" specification in the presence of two subscribing witnesses.

DAVID B. STEVENSON.

Witnesses Y JOHN R. FIELDI-IOUSE, Monnon SPAHM. 

